Oscillating pressure-blower.



H. O. JACKSON.

OSCILLATING PRESSURE BLOWER.

APPucATioN FILED MAY 18, 191e. LQQSQQ. 'Patented om.. 16, um. 5 SHEETS-SHEET 1.

.u. .5 W 7/ ...3. a/

H. 0. JACKSON;

osclLLAJmG PREssuRE BLOWER.

APPLICATION FILED `MAY I8. I9IB.

htend 0st. 16, 1917.

5 SHEETS-SHEET 2 nvcn Ioz/ /fa C@ my? m,% .NN www .RW mm \m| H. 0.1JACKS0N. OSCILLATING PRESSURE BLOWER.

APPLICATION FILED MAY l5, |916.

Lmgg, l Patented @en 16, 1917.

5 SHEETS-SHEET 3.

II. ojIAcKsoN.

OSCILLATING PRESSURE BLOWER.

APPLICATION FILED MAY I,I9I6.

Patlld 0G15. 16, 1917.

5 SHEETS-SHEET 4.

H. 0. JACKSON.

OSCILLATING PRESSURE BLOWER.

APPLICATION FILED MAY I8, Isle.

1,243,299. Patented 0@1..16,'1917.

5 SHEETS--SHEET 5.

/3 /5 ff. 7/ /8 77 .ya I- E' @ad 1 f2 @y /7 ZF@ a HENRY O. JACKSON, OF DENVER, COLORADO.

OSCILLATING PRESSURE-BLOWER.

Specification of Letters Patent.

Patented oct. is, fait.

*Application led May 18, 1916. Serial No. 98,297.

To all 'whom t may concern: i Be it known that I, HENRY O. J AcKsoN, a citizen of the United States, residing lat the city and county of Denver and lState of Colorado, have invented certain new and useful Improvements in Oscillating Pressure-Blowers; and `I do declare the 'following to be a full, clear and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which forma part of this specification.

My invention relates to improvements in blowers or air forcing apparatus of the character in which an oscillating blade or piston serves to perform the air forcing function. My object is to provide a device of this character which shall be comparatively simple in construction and which shall efliciently perform its function. My further object is to provide a construction of this class which shall be of large capacity, and therefore well adapted for use in ventilating large buildings and mines; also to furnish currents of warmed, cooled, moistened or medicated air to lpublic buildings or others which are liable to be closely occupied; to furnish drying atmosphere in lumber or grain kilns and vin all other relations where air currents in relatively large volumes are required.

In my improved construction Iemploy a' casing whose body portion is cylindrical in shape, and which is equipped with two sector-shaped hollow members, the chambers of each being separated into two compartments by a centrally disposed partition, each compartment being equipped with four check valves, those of one being inwaily opening and those of the other outwardly opening, whereby-two of the valves of each outwardly opening set may be simultaneously employed for the entranceof air to the corresponding piston chamber compartments, while two valves of each inwardly opening set are employed for the exit of :air

from the piston chamber compartments. One compartment of each hollow member is always employed for receiving air from an inlet conduit while the other is always employed for the discharge of air to an outlet conduit. From this it will be vunderstood that one pair of check valves of each compartment is always idle during the move- `mechanism, ,including a ment of the corresponding blade or piston member in one direction, since-both valves of one pair are closed. These same valves, however, open during the movement of the piston blade or member in the opposite direction for the ejection of air from the piston chamber or compartment into the corresponding exit chamber or compartment of a sector-shaped member.

Any suitable mechanism may be employed for imparting the oscillating movement to the blade or piston.

Having briefly outlined my improved construction, I will proceed to describe the same in detail, reference being made to the accompanying drawing, in which is illustrated an embodiment thereof. In this drawingr a cross section taken through pressure blower, cutting the angles to the axis of the cy- Figure l is my improved same at right lindrical body member, and, consequently,

at right angles to the axis of oscillation of the operating blade or piston. The plane of this section is indicated by the line 1-1, Fig. 2, the view being obtained by looking toward the' right.

Fig. 2 is a longitudinal section taken on i the line 2-2, Fig. 1, looking downwardly. This view is a central section except that it is taken just above the shaft member of the oscillating piston.

Fig. 3 is a section taken at right angles to Fig. 2, the plane of the section being indicated by the line 3-3, Fig. 1.

Fig. 4L is a section taken throughthe operating shaft outside of the body of the structure, the planev of the section being indicated by the line 1 -4, Fig. 5. This view is obtained by looking toward the left and shows the specific mechanism for imparting the oscillating movement vto the piston.

Fig. 5 is an elevation of the operating fragment of the main structure, the view being taken by looking in the direction of arrow 5, Fig. 4:.

Fig. 6 is a section taken on the line 6 6, Fig. l, the parts being shown on a larger scale.'

Figs. 7 8 specific construction of check valves, which and 9 are views illustrating af I prefer to employ in connection with 'my A improved oscillating blower.

vThe same reference characters indicate thel ating shaft 6 which passes centrally through f .acylindrical casing 7 inclosing a chamber 8in which are located and secured to hol? low sector-shaped members which ll4 will designate by the vnumerals 9 and 10 respectively, the difference ,in designation, how-- ever, being for convenience only, since the two structures are substantially identical. As shown in the drawing, the two members 9 `and 10 are secured to the cylindrical wall of the casing by means of stud bolts 12 which are passed through the outer curved portions of the members and 4threaded into the wall of the casing. Each of these sectorshaped members-has a-central partition 13v which is cast integral with the member and .separatesA the chamber of the member into what I will term inlet and outlet compartlments designated bythe numeralsv V14` and 15 respectively, since the air enters the compartment 14 from the atmosphere for V1nstance, and is discharged from the, other compartment as it leaves the blower. Each sector-shaped .member is equipped with eightcheck valves, there being four for each compartment. All of.- the check valves l 'of each outlet compartment, namely, those designated by the numeral 17, open inwardly "tinto ythe compartment 15 from the adjacent ,piston chamber compartment; while all of the valves of each inlet compartment,

namely, those designated 16, open into thev I lpiston chamber compartments, whereby air is allowed to enter said compartments. Each v inlet compartment of the two sector-,shaped members is 'in communication by an lopenin 18 and a'chamber 19 with an inlet conduit 2 0; w-hile the outlet compartments 15 of the two sector-shaped members are in communication by way of openings 21. and chambers 22 with an outlet conduit 23.

l The two sector-shapedmembers vare dial y. metrically located as best illustrated inFig.

y1, and divide the casing chamber into two 45- j treme positions and its members26 and 27 have just expelled a charge of air from the adjacent piston compartments, through the inwardly opening check valves 17 of the two compartments 15 ofthe two members 9 and 10', and have drawn charges of air into the two compartments 24 and 25 of the casing chamber, through the outwardly opening check valves `16 .of the two members 9 and 10. Now, as the piston begins its movement in the direction-.of theA arrows a (see Fig. 1), its member 26 immediately begins to expel th-e air fromv the compartment,` 24a' through the check valves 17 into the com partment 15 of the member 10 and to draw a charge of air into the compartment-24 of the casing chamber through the outwardly opening check valves 16 of the member 9;

while the blade 27 of the piston during the same time, begins to `expel the charge of air from the chamber compartment 25 through the check valves 17 ofthe member 9, and draw .a charge of air into the chamber compartment 25 through the outwardly opening check valves 16 ofthe member 10, and this operationjis repeated so-long as the machine is :in motion. It will thus' be understood that both the construction and the operation of the mechanism are `comparatively-(simple.

Provision is made for formingv tight joints between the shaftand the membersA 9 and 10 by the employment of packing strips 29 which are movable in recesses 30 formed ink the inner extremities' of the saidmembers and arevforced inwardly against the oscillating shaft by means of. spiral springs '31.

Furthermore, the oscillating piston 28 is equipped at itsopposite sideswith, packing strips 32 having tongues 33 which enter grooves 34 formed in the blade members 26 and 27. The tongues of these packing strips are acted on to force thestrips outwardly against the adjacent walls of the casing, by spiral springs 35; while the ends of this piston are" equipped with similar packing strips `36 which are acted on by spiral springs 37. l The blade members of the piston are further provided with corner 'packing pieces 38 which are angle-shaped and are forced outwardly into the corners lof the casing chamber by means of spiral springs 39.

yThe Walls of .the casing 7 are chambered as shown at 40 wherebyjackets are formed throughwhich water circulates for cooling purposes, vthe samei being supplied from any suitable source (not shown). The journal extremities 43 and 44 of the shaft 6, pass through stuffing boxes 41 and 42 with which the structure is equipped, whereby the escape of iuid around the journals, is prevented.

The oscillating piston is actuated for the purpose of performing its function through the medium of suitable mechanism, one form ofwhich is illustrated in Figs.4 and 5. A

crank 45 is keyed as shown at .46 to the exposed extremity of the journal 44 of the shaft y6.4 This crank arm is connected by means of a wrist pin 47 withthe center of a floating `equalizing bar 48 whose opposite extremities are connected by means of wrist pins 49 andA 50 with two links 51 and 52, the opposite extremities of these links being condrawing, meshes withv the gear 58.

If it be assumed that the operating mechanism is in the position. shown in Fig. 4, and the operating pinion is rotated inthe direction of the arrow adjacent said pinion, the two gears 57 and 58 will be rotatedin the directions indicated by the arrows adjacent said gears, and, if it be assumed that thepiston is in the position shown by dotted lines in Fig. 1 atV the beginning of the operation, the axes of the ltwo wrist pins 49 and 50 will move in the dotted arcs 60 and 61, until the equalizing bar 48 is in the position indicated by the broken line 62. During this same time the' axes of the two wrist pins 53 and 54 will have traversedl paths indicated by the dotted arcs 63 and 64, and the longitudinal centers of the two links 51 and 52 will be in the positions respectively indicated by the broken lines 65 and. 66. At the same time the axis of the wrist pin 47 which connects the crank 45 with the equal'- izing bai-,will have traversed a dotted arc' 91 and the piston will have made one complete stroke, during which it may be said to have moved from the position shown by dotted llines in Fig. 1 to the position shown by broken lines in the same figure. Then, as the rotation of the two gears 57 and 58 continues in the same direction, the parts 4of the actuating mechanism just referred to,

will begin to traverse the aforesaid dotted `arcs in the reverse direction, and by the time the operating devices have again reached the full line positions in Fig. 4, the

oscillating piston will have made its reverse stroke or moved from the broken line position in Fig. 1 to the dotted line position in the same figure; and this operation is repeated as the motion of the operating mechanism continues.

By reference to Fig. 6, it will be understood that one of the valves 16 and one ofthe valves 17 of the sector-shaped member 9, is illustrated. Assuming that the blade. member 26 of the piston is moving from'the dotted line position in Fig. 1 as indicated by `the arrow, the air is entering the chamber compartment 24 through the valves 16 of the member 9,. while the valves 17 of the same member are' closed. As illustrated in the drawing, the mechanism for the check valves disclosed in Figs. 6 to 9 inclusive, is that covered by a" simultaneously pending application, and consistslof -two casing members 67 and 68 connected by screws 69, the casing V members being respectively equipped with passages and 71 arrangled` in staggered relation and controlledby re aj VYindicated by the arrows tively long, thin, fiat valve pieces 72, the

casing member 68 being recessed as shownv As'illustrated in the drawing, it may be I assumed that all of the check valves 16 and 17, are of the construction illustrated inv Figs. 7, 8 and 9, but it must also be understood that the valves 16 are reversely arranged from the valves 17 of either member Y 9 or 10. From this it will also be understood that if one of these valves is in position to act as an inlet valve, if its position be reversed it will serve as an outlet valve.

As illi'strat'ed in the dra-wing, each pair of valves 16 as well as each pair 17 of each member 9 or 10, is held in place through the 'instrumentality of asort of cage 74 which consists of a ring 75 which is provided with a number Aof spider arms 76 which merge in a, center piece 77 which is engagedl by the inner extremity of a screw 78 which is threaded through an opening" orrned in a piece 79. There is one piece 79 or each pair Y valves to hold the latter in place. It is not thought necessary to explain this valve construction more in detail in this specification, since it is not claimed herein. i

Provision is made for lubricating the journals 43 and 44 of the shaft 6, since the journal boxesare provided with ducts 83 whose outer extremities are closed by screw plugs 84. These ducts terminate at the topof the journals. y'Leading downwardly from these journals are other ductsv 85 (see Fig. 3) which terminate in receptacles 86 into which the'superiiuous oil may be drained.

From the foregoing description the use and operation of my improved blower will be readily understood. Assuming that the gear 60 is rotated, rotation is imparted to the two gears 57 and 58 in the directions cogged peripheries of thesegears; This action of the gears serves to move the crank 45 first from the position shown in full lines in Fig. 4, toward the left, the axis of the crank pin 47 traveling in the dotted arc 91 as heretofore explained; until the necessary movement has been obtained-to impart to the pislton 28 one complete stroke, the 'saidopiston 79 and 81, simply constitute a strucadjacent the ,lower x v.moving from. the dotted line position in 1 to the broken line position in the same gure.. During this operation, the blade member 26 of the piston has expelled a charge of air from the chamber compartment 24 by wa 17 of the sector-shaped member 10. At the saine time the blade member 26 of the pistony has drawn a charge of air into the chamber compartment 24 lthrough af pair of outwardly openingcheck valves 16 of the sector-shaped member 9; and the blade member 27 of the pistonhas ejected a. charge of air through a pair of inwardly opening checkvalves 17 of the sectors-shaped member e9,l and has drawn ya charge 4of air into the chamber compartment 25 through a pair of outwardlyV opening .check valves 16 of the sector-shaped member y10. As soonas the crank arm 45 l the position indicatedy by the broken line 62,

, and the two links 51 and 52 have reached the positions respectively indicated by the f During this return stroke ,or reverse move- `ment of the piston""28,' charges of air will brokenlines 65. and 6.6,ther'-lpiston 28 hasl made one complete stroke, namely, from `the position shown by dotted lines to the posi-L tion shownjby broken lines in 1.,. The crank arm 45 then -beginsits ,reverse movement, and the axis Aofy the` crankpin47 traverses the dotted arc 91 in the direction opposite that heretofore explained, whereby vthe crank arm 45 is returned to the full line position in`-F.ig.4; and at the same time the other parts ofthe operating mechanism will have been returned to 'COrlfeSponding' posis.` tions or those shown .byfullllines in Fig. 4, and the operating piston l28 will have completed its return stroke,'whereby it is returned to the dotted line positionin Fig. 1'.- l

havebeenejecteifrom the chamber compartmentsx-24 and 25 and other charges of' air drawn'thereinto on' thev principle; hereto# fore explained. It willlbeunderstood that as the crank arm 45 Ioscillates as lheretofore explained, a corresponding rmovement is imparted to the'main shaft 6 upon whichithe 4' vpiston is mounted, 'by virtue of *the Yfact that the crank arm `45 iskeyed `to vthe journal ofthesaidshaftl.. l

My improved construction has-ea great of the inwardly opening check valves v hpartmentnof variety of uses, some of whichhave already?" 65 been mentioned/ltis evident that it may `nie'iiitoftheGigllitliesiictioiside and 11.80`

be advantageously employed in the otation process. for ore treatment; in copper j converters; inr sugar factories; and for all other purposes where high pressures are re uired. y

aving thus described my invention, what j 1. In air forcing apparatus the combination of a circumferentially closed cylindrical casing having a detachable head, two sector shaped hollow members oppositely disposed lin said casing and dividing the chamber thereof into two compartments, .said'hollowv members having closed walls fitting the adjacent closed, areas ofthecylindrical wall of the casing, means for removj ably securing saidhollow members in place, l v

eachhollow member having a partition dividing its' Acavity into 'two compartments one of the latter having an inlet opening "for,

atmospheric air and the,` other an outlet ,hollow member, v inwardly opening check valves respectively controlling the vports on lOpposite sides of each outlet compartment `of each hollow'member, and an oscillatory 10 0 piston having blade a members movable inA the respective chamber compartments -fof the cylindrica'lcasing, and coperating with the hollow members.

tion of 'a circumferentially closed cylindrical casing having a detachable head two` substantially sector shaped hollow members oppositely disposed in said casing and d1-v viding the chamber thereof into two sub- Y st antiallyequal compartments, said hollowv v 'members' having closed walls fitting the adjacent closed areas of the cylindrical wall l of the casing, means for removably securing said hollow members in place, each hollow member having a partitiondividing its cavv ityintoftwo compartments one of the-latter' having an inlet opening'l for atmosphericair),`

and theother an outlet opening for "com- PreSSd-?, fille Said inletiand ibutlet open- 120 ings .of each member beingrespectively in;v 1.. communicatioiiwith openings in the heads- 0f the casing, each compartment.; of? each- .j g hollow member; having ports "respectively:` communicating on opposite v'sides .wit i for cont-rollingthev :o rtsfof the yinlet cointhfe air to escae into. the chamber compartv2. Inair forcing apparatus, the combina- `105 5?/Y adjacent .casing compartmen Sfar( means simultaneously to close the said ports on the compression side, and means for controlling the ports of the outlet compartment ofeach hollow member to allow the air to enter said compartments onthe compression side and to close said compartments` on the suction side, an oscillatory piston journaled between the two sector shaped members and having blades projecting in'to the respective chamber compartmentsof the casing.

3. In air forcing apparatus the combination of a circumferentially closed cylindrical casing having detachable heads, two substantially sector shaped hollow members oppositely disposed in said casing and divid ing the chamber thereof into two substantially equal compartments, said hollow members having closed walls fitting the adjacent closed areas of the cylindrical wall of the casing, means for "removably securing the said hollow members in place each hollow member having a partition extending at right angles to the axis of the'piston and dividing the hollow member into inlet and outlet compartments, the inlet compartment of each member having an outwardly opening check valve adjacent each chamber compartment of the casing and the outlet compartment of each member having an inwardly opening check valve adjacent each chamber compartment, and an oscillatory piston journaled between the two members and having plates movable in the respective chamber compartments and cooperating with the hollow members. v

4.. Air forcing apparatus comlprising a circumferentially closed cylindrical chamber having removable heads respectively open for the entrance of atmospheric air and the escape of compressed air, substantially sector shaped hollow members oppositely disposed in said chamber and dividing the latter into two substantially equal and oppositely disposed compartments, each -hollow member having a closed outer wall curved to engage the inner surface of the adjacent area of the cylindrical chamber,

means for detachably securing the hollow members. within the chamber, each hollowl member having two distinct compartments one being an inlet compartment in communication with the inlet opening in the adjacent head of the chamber and the other being an outlet compartment` incommunication with the outlet opening in the adjacent head of the chamber, a piston ymounted to oscillate in the chamber and having a blade member in each chamber compartment, each compartment of each hollow member having ports adjacent ther respective chamber compartments, and means for controlling the ports of the inlet compartments to allow air to pass therefrom into the adjacent chamber compartments, and means for controlling the ports of the outlet compartr ments of the hollow members to allow the air to pass from the chamber compartments into the hollow member compartments.

5. In air forcing apparatus the combination of a circumferentially closed cylindricalv chamber having detachable heads, two oppositely disposed substantially sector shaped members removably secured therein and dividingv the chamber into two compartments of substantially equal volume, a piston plate centrally pivoted in the chamber and having a. member movable in each compartment, each hollow member having a partition dividing the cavity into two compartoppositely disposed therein and dividingthe casing ychamber into two compartments, said members each having two compartments and closed walls fitting the adjacent closed areas of the cylindrical wall of the lcasing, means for removably. securing said members in place within the casing, one compartment of each member having inand from the inlety wardly opening check valve controlled ports respectively arranged on opposite'sides, and the other compartment-of each member having outwardly` opening check valve controlled ports respectively arranged on opposite sides, and a piston 'centrally pivoted to oscillate in the' chamber and having blades freely movable in the respective chamber compartments formed by said sector shaped members, and coperating with the latter, one compartment of each hollow member ybeing in communication with anair inlet and the other compartment in communication with an airoutlet. v

In testimony whereof I aflix my signature in presence of two witnesses.

HENRY 0. JACKSON.

Witnesses:

Gnou HUsToN, vA. Ennn'r OBnmN. 

